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Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing

Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing. Hossein Gholizadeh, MEngSc; Noor A. Abu Osman, PhD; Arezoo Eshraghi, PhD; Sadiq Ali, MEngSc; S. K. Sævarsson, MSc; W. A. B. Wan Abas, PhD; Gholam Hossein Pirouzi, BSc. Aim

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Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing

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  1. Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing Hossein Gholizadeh, MEngSc; Noor A. Abu Osman, PhD; Arezoo Eshraghi, PhD; Sadiq Ali, MEngSc; S. K. Sævarsson, MSc; W. A. B. Wan Abas, PhD; Gholam Hossein Pirouzi, BSc

  2. Aim • Evaluate pistoning at prosthetic liner-socket interface during gait. • Assess patient satisfaction with two different liners. • Relevance • Poor suspension increases residual-limb slippage inside socket during ambulation.

  3. Method • Fabricated two prostheses for 10 subjects: • Seal-in liner. • Locking liner. • Measured pistoning during gait with Vicon motion system. • Reviewed Prosthesis Evaluation Questionnaires completed by subjects.

  4. Results • Pistoning : • Higher with locking liner than seal-in liner. • Satisfaction: • Higher with locking liner than seal-in liner.

  5. Conclusion • Pistoning may not be main factor that determines patients’ overall satisfaction with a prosthesis.

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